the victim is here at the burn unit. family members tell me that she remains in critical condition tonight. in the meantime, police have identified her boyfriend as the prime suspect. and he is still at large. >> i just want to know why he did it. she didn't deserve it. >> reporter: family members and other witnesses watched in har reporter this after as the man identified as 22-year-old dexter oliver threw a famable liquid on to his girlfriend and then set her on fire. pieces of the woman's burned clothing were still laying in the street when her sister shs precious craig, described to us what led to the attack. >> she said that he had to get out, that it was over. and she left the laundromat. ten minutes later, she was burned. >> reporter: family members say they had been date for six months and had a rocky relationship. today we're told they were arcing as they returned from the laundromat down the street and were near the victim's house when lamar told oliver the relationship was over. oliver allegedly returned to th